Create missing file "descrip.h"

[advancedwebdeveloper]

While trying to compile the sources - experience a bug, related to an absence of a header file:

cd src
clang --target=wasm32-unknown-wasi --sysroot ../../wasi-libc-build -Wl,--no-entry -idirafter . -o ../wasm/vms_progname.wasm vms_progname.c

Clang rejected/raise fatal error:

vms_progname.c:68:10: fatal error: 'descrip.h' file not found

.

This line of code is referenced:

make_wasm/src/vms_progname.c

Line 68 in 45b70b7

#include <descrip.h>

.

Ivan